10388813 has 4 divisors (see below), whose sum is σ = 10723968. Its totient is φ = 10053660.

The previous prime is 10388789. The next prime is 10388821. The reversal of 10388813 is 31888301.

10388813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31888301 = 71 ⋅449131.

It is a cyclic number.

It is not a de Polignac number, because 10388813 - 2¹⁴ = 10372429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10388813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10388863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167531 + ... + 167592.

It is an arithmetic number, because the mean of its divisors is an integer number (2680992).

Almost surely, 2^10388813 is an apocalyptic number.

It is an amenable number.

10388813 is a deficient number, since it is larger than the sum of its proper divisors (335155).

10388813 is an equidigital number, since it uses as much as digits as its factorization.

10388813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335154.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 10388813 is about 3223.1681619177. The cubic root of 10388813 is about 218.2002830700.

The spelling of 10388813 in words is "ten million, three hundred eighty-eight thousand, eight hundred thirteen".